cudaback



No. 6||,299. Patented Sept. 27, |898.

H. J. WASHBURN 6. E. L. CUDABACK.

SPRING TOOTH HARBOW.

(Application filed-June 26, 1896.) {No Model.) 2 Sheets-Sheet l.

Ens cn, PNoTouTHo., wlw-ummm u 1;,

No. 6||,299. Patented Sept. 27, |898. H. J. WASHBURN &. E. L. CUDABACK.

SPRING TOTH HARROW.

(Application led June 26, 1896.) (N0 Model.) 2 Sheets-Sheet 2.

m: Nonms PETERS co. PHOTO-ummwnsnmmom o, c.

NiTnD STATES PATENT muon.

HELUM J. VASHBURN AND EDGAR L. OUDABAOK, OF RANSOMVILLE, NEV YORK, ASSIGNORS OF ONE-HALF TO CLINTON G. OUDABAOK AND WILLIAM G. IVASHBURN, OF SAME PLACE.

SPRING-TOOTH HARROW.

SPECIFICATION forming part of Letterslatent No. 611,299, dated September 27, 1898. Application filed June 26, 1896. Serial No. 597,038. (No model.)`

T @ZZ whom it may concern:

Be it known that we, HELUM J. WAsHBURN and EDGAR L. CUDABACK, citizens vof the United States, residing at Ransomville, in the county of Niagara and State of New York, have invented a new and useful Spring-Tooth Harrow, of which the following is a specification.

Our invention relates to harrows, and has for its object to provide an improved construction of spring-tooth vharrow of the sectional or folding frame type wherein the folding of the parts or members is facilitated without causing interference between the series of spring-teeth, which in the preferred construction project above the plane of the frame, and, furthermore, to provide a simple land improved construction and arrangement of means whereby the teeth are so attached to the tooth-bars as to resist the various strains applied to the teeth in their different positions.

Further objects and advantages of this invention will appear in the following description, and the novel features thereof will be particularly pointed out in the appended claims.

In the drawings, Figure 1 is a perspective View of a harrow constructed in accordance with our invention. Fig.'2 isa central longitudinal section of the same, taken between the harroW-sections. Fig. 3 is an enlarged detail transverse section of the fastening device for the barrow-teeth. Fig. 4 isa detail sectional view on the line ec @c of Fig. 3. Fig. 5 is a detail view in perspective of one of the saddle-plates.

Similar numerals of reference indicate corresponding parts in all the figures of the drawings.

The harrow-frame comprises coextensive side sections or members 1, of which the front bars 2 are connected with the outer side bars by rounded portions 5, said round and the parallel rear bars or sides of the frame-sections being extended beyond the inner side bars 6 to form extensions 3, which'are overl lapped and are pivotally connected by means of pivots 4t to allow the barrow-sections toad- .of the soil and also enable one section to be folded upon the other in accordance with the usual practice. The inner side bars 6 of the frame-sections are parallel with the outer side bars and are spaced apart to form a longitudinal interval, into which project the inner ends of certain of the tooth-bars 8, which are mounted in suitable bearings 7 upon the outer and inner side bars. The tooth-bars of the two sections are alined in pairs, but of each pair of alined tooth-bars only one is eX- tended beyond the inner side bar of the frame into the longitudinal space, the extended portions of the tooth-bars being indicated at 8a. The spring-teeth 19 are arranged upon each tooth-bar at uniform intervals; but the innermost teeth of two alined tooth-bars are arranged at different distances from the medial line of the harrow, or, in other words, a longitudinal line connecting the pivots 4t. Thus, the corresponding harrowtteethv upon the alined tooth-bars are arranged at relativelydifferent distances from the medial line of the barrow-frame, whereby when the barrow-sections are folded one upon the other said harrow-teeth are disposed inV different vertical planes, andthe sections are adapted to fold compactly.

The tooth-bars 8 are preferably of tubular construction, and each is provided upon 0pposite sides of the plane of each barrow-tooth with transverse bolt-openings 9 (see Fig. 3)

for the reception of diametrical bolts l0, fitted with taps or nuts 11, said taps or nuts preferably being arranged at the upper ends of the bolts, whereby they are within reach for adjustment with facility to take up looseness due tojarring or wear. Fitted upon the under yside of each tooth-bar between the spaced securing-bolts 10 and in the planes of the harrow-teeth are saddle-plates 15, having upwardly-extending side flanges, which are provided with registering curved seats 16 to snugly fit the contour of the tooth bars. These saddle-plates are of a length greater than the diameter of a tooth-bar,`and at their under sides they are longitudinally channeled to form harrow-tooth' seats 17,V bounded f at their sides by depending ribs 18. Each harrow-tooth is provided at its inner or fixed end with a straight or fiat portion to fit in the harrow-tooth seat 17 of one of the saddleplates, and beyond the front end of the saddle-plate said tooth is abruptly curved upwardly to form a runner portion, upon which the harrow may be supported when the feet thereof are inoperative or are turned back so as to remove their extremities from contact with the soil. The free ends of the harrowteeth are arranged radially opposite the inner or fixed ends thereof, whereby when said free ends are approximately under the tooth-bars, being slightly in rear thereof, the straightseated portions of the teeth are arranged in a horizontal plane. Thus in order to bring the runner portions of the teeth into operative position it is necessary only to turn a toothbar through an angle of ninety degrees.

Spanning the seats 17 of the saddle-plates and arranged parallel with and beneath the tooth-bars are clip-plates 14, having openings 13, through which thesecuring-bolts lO extend, the heads l2 of said bolts being arranged in contact with the under surfaces of said clip-plates, whereby when the bolts are tightened the clipplates bear against the under surfaces of the flat or straight portions of the teeth, and thus hold the same firmly in the seats 17 of the saddle-plates and at the same time secure the seats 16 of the saddleplates in firm frictional contact with the surfaces of the tooth-bars.

It will be seen'that the diametrical disposition of the securing-bolts with relation to the tooth-bars insures the positive fastening of the teeth to said bars and prevents both rotary and longitudinal displacement of not only the teeth but the saddle-plates; but at the same time a tooth may be readily disconnected from the tooth-bar by simply removing the taps 11 from the securingbolts. Hence while we have provided an efficient means of attachment of barrow-teeth to a tubular tooth-bar we have at the same time provided such means as to facilitate the removal and replacement of those teeth. The special advantage in engaging the securingbolts with diametrical openings in the toothy bars, however, consists in the fact that where the teeth describe approximately a 4complete circle or spiral coil and are adapted at points near their fixed ends to perform the funetions of runners it is necessary to provide such means for securing the teeth to the tooth-bars as to prevent twisting or slipping, and the specific means herein described have proved under test to be efficient in all positions of the teeth.

Rock-arms 2O are detachably bolted or otherwise secured, as at 2l, to traverse the toothbars near their inner ends, with the exception of the rearmost tooth-bars, which have fitted thereto near their inner ends adjusting hand-levers 22, provided at one side withsuitable catches 23, adapted to engage the teeth or locking-segments 24:. Connecting-rods 25 extend from the adj usting-levers to the rockarms,whereby said rock-arms,with the toothbars to which they are attached, may be adjusted simultaneously by applying operating force to the handles. Any suitable draft appliances may be employed, such as clips 26, links 27, connected with the clips, and a draftbar 2S.

From the above description it will be seen that the arrangement of the innermost teeth upon alined tooth-bars at different distances from the medial line of the harrow enables us to apply teeth to the inwardly-extending portions of the tooth-bars to occupy the space between the barrow-frames without interfering with the folding of those frames; `but it will be understood, furthermore, that in practice various changes in the form, proportion, and the minor details of construction may be resorted to without departing from the spirit or sacrificing any of the advantages of this invention.

Having described our invention, what we claim is- 1. In a harrow, the combination of a sectional frame of which the members are pivotally connected upon a medial line for folding into planes one above the other, each frame-section having inn er and outer side bars, of which the former are spaced apart to form a longitudinal interval,transverse toothbars mounted in bearings upon said side bars of the frame-sections, the tooth-bars of one frame-section being respectively alined with the tooth-bars of the other section, and one of the tooth-bars of each pair being extended inwardly beyond the inner side bar of the frame-section to occupy a position in said longitudinal space between the inner side bars, and teeth spaced at uniform distances upon each tooth-bar,with the innermost teeth on alined bars arranged at different distances from the medial line upon which the framesections are connected to fold, whereby when the frame-sections are folded, the adjacent teeth are arranged in different vertical planes, substantially as specified.

2. In a harrow, the combination with a supporting-frame and rocking tooth-bars7 together with operating devices for said toothbars, of spring-teeth,each consisting of a complete spiral coil provided at its inner end with a straight fiat portion, asaddle-plate provided with lateral upwardly-extending flanges cut away at their centers to form registering seats receiving and fittingthe contour of atooth-bar, and also provided at its underside Witha longitudinal seat, approximately equal in depth and width with the straight iat inner portion of the teeth, and adapted to receive the same, a clip-plate arranged in contact with the under surface of said fiat portion of atooth and parallel with the tooth bar, and provided near its ends with openings registering with diametrical openings in the tooth-bar, and securing-bolts extending upwardly vthrough IOC IOE

our own We have hereto afiixecl our signatures in the presence of two Witnesses.

IIELUM J. WASHBURN. E. L. CUDABACK.

Vitnesses: WM. D. JOHNSON, F. N. STAGE. 

